Printed circuit board (PCB), also called printed circuit board (PCB), is a carrier for all kinds of electronic components to realize regular connection. Let’s take a look at the related content together with the layout Design Xiaobian.
PCB layout is a printed circuit board. Printed circuit board (PCB), also called printed circuit board (PCB), is a carrier for all kinds of electronic components to realize regular connection.
The Chinese translation of PCB layout is printed board layout. In traditional technology, circuit boards are printed and etched, so they are called printed or printed circuit boards. By using PCB, people can not only avoid wiring errors in the installation process (before PCB appeared, electronic components were all connected by wires, which was not only complicated but also had potential safety hazards). The first person to use PCB was an Austrian named Paul. Eisler, first used in radio in 1936. Widely used in 1950s.
Pcblyout characteristics
At present, the electronic industry has developed rapidly, and people’s work and life are closely related to various electronic products. As an indispensable carrier of electronic products, -PCB also plays an increasingly important role. Electronic equipment presents the trend of high performance, high speed and thinness. As a multi-disciplinary industry, PCB has become one of the most critical technologies of electronic equipment. PCB industry plays an important role in electronic interconnection technology.
PCB layout design process
Conventional PCB design includes several steps, such as database building, net list adjustment, layout, wiring, document output, etc., but the conventional PCB design process is far from meeting the increasingly complex requirements of high-speed PCB design.
As SI simulation, PI simulation, EMC design, single board technology, etc. all need to be closely integrated into the design process, and in order to achieve quality control, the actual PCB design process is much more complicated to add evaluation links at each node. PCB design outsourcing companies can better solve the problems caused by high-speed design.
1、Cadence Allegro
Cadence Allegro system interconnection platform can collaboratively design high-performance interconnections across integrated circuits, packages and PCBs. By applying the collaborative design method of the platform, engineers can quickly optimize the system interconnection between I/O buffers and across integrated circuits, packages and PCBs. This method can avoid hardware rework, reduce hardware cost and shorten design cycle. Constrained Allegro process includes advanced functions for design capture, signal integrity and physical implementation. Because it is also supported by Cadence Encounter and Virtuoso platform, Allegro collaborative design method makes efficient design chain collaboration a reality.
2、MentorGraphics PADS
Mentographics is the leading manufacturer of electronic design automation technology, which provides complete software and hardware design solutions, so that customers can launch powerful electronic products in the market at the lowest cost in a short time. Nowadays, circuit boards and semiconductor components become more complex, and with the deep sub-micron process technology being deeply applied in system single chip design, the difficulty in converting a creative idea into a product on the market has increased greatly. For this reason, Mentor provides innovative products and complete solutions, which enable engineers to overcome the design challenges they face.
3、MentorGraphics WG，EN
MENtorGraphics WG, en is a high-speed circuit simulation tool.
4、AlTIum designer
AlTIum Designer is an integrated electronic product development system launched by AlTIum Company, the former Protel software developer, which mainly runs on Windows operating system. This set of software provides a brand-new design solution for layout designers through the perfect integration of schematic design, circuit simulation, PCB drawing and editing, topological logic automatic wiring, signal integrity analysis and design output, so that pcb layout designers can easily design. Proficient use of this software will greatly improve the quality and efficiency of circuit design.
5、Zuken CR
In addition, you should know the basic knowledge of circuit, the principle analysis of circuit diagram, the performance and function of common components, and be able to read and understand Rule to make settings.
Driven by Moore’s law, the electronic industry has become more and more functional, with higher integration, faster signal rate and shorter research and development cycle. Due to the miniaturization, precision and high speed of electronic products, PCB design should not only complete the circuit connection of various components, but also consider the challenges brought by high speed and high density.
PCB design is no longer a subsidiary of hardware development, but an important part of “front-end IC, back-end PCB, SE integration” in product hardware development.
IC company not only completes the development of the chip, but also gives the typical design reference.
According to the functional requirements of products, system engineers complete IC selection, function definition and schematic diagram development according to the principle of IC company. Traditional hardware engineers’ work of circuit development is gradually reduced, and the work of circuit development is gradually turned to IC engineers and PCB engineers.
According to the principle scheme provided by the system engineer, the PCB engineer, with the cooperation of the structural engineer, completes the PCB design according to the processing technology and capability of the current PCB factory, taking into account SI, PI, EMI, structure and heat dissipation as a whole.